While i and others view Canaria as rather barren and unpopulated, relatively speaking, it does make sense that the "production" of Zoners has shifted over time from the "disenchanted and disenfranchised" to makin' babies on Canaria, and now from those bases in Omega 50 perhaps.
Those kids won't necessarily wanna stay home "on the farm".
(Also, Canaria probably does not have infinite supplies of deuterium..)
So, excellent suggestion on "Zoner passengers."
Now, for the places that need love, and Yukon definitely needs love, along with the "border" stations you mentioned, give us a tad better profit return on fares for "regular" passengers, to cover the folk who still want to get away from it all.